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Vishay General Semiconductor - Diodes Division 3KASMC10HE3_A/H
- Part No.:
- 3KASMC10HE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC10HE3_A/H.pdf
- Description:
- TVS DIODE 10VWM 18.8VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,429
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Product details
Overview
3KASMC10HE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, rated for 10 V stand-off voltage, 11.1–12.3 V breakdown at 1 mA, 3000 W peak pulse power (10/1000 μs), 177 A peak surge current, and 17.0 V clamping voltage at IPPM - deployed for automotive power line and sensor signal line protection against inductive switching transients.
For engineers reviewing the 3KASMC10HE3_A/H datasheet, 3KASMC10HE3_A/H pinout, 3KASMC10HE3_A/H application, or 3KASMC10HE3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, TJ = 185 °C operation, MSL Level 1 rating, and DO-214AB thermal performance with RθJA = 77.5 °C/W.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable clamping under high-temperature stress (up to 185 °C junction), with low incremental surge resistance and fast response time essential for protecting MOSFETs and ICs from ESD and load-dump events. Its unidirectional architecture provides forward conduction path during overvoltage while maintaining tight VWM/VBR tolerance.
The device operates within -65 °C to +185 °C junction temperature range, meets J-STD-020 MSL Level 1 (260 °C peak reflow), and delivers 6.0 W steady-state power dissipation on infinite heatsink at TL = 75 °C - enabling robust deployment in engine control units and ADAS sensor modules without derating penalties.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - maximum reverse voltage before clamping begins; defines safe operating margin for 12 V automotive systems. |
| VBR (min/max) | 11.1 V / 12.3 V at IT = 1 mA - tight breakdown window ensures predictable turn-on and minimal overshoot during transients. |
| PPPM | 3000 W (10/1000 μs) - sustains high-energy surges common in alternator load dump and inductive kickback events. |
| VC @ IPPM | 17.0 V - clamping voltage at 177 A peak current; limits downstream voltage stress to safe levels for 12 V logic interfaces. |
| TJ max. | +185 °C - enables under-hood placement in automotive ECUs without thermal derating concerns. |
| Package | DO-214AB (SMC) - industry-standard SMT outline with 7.11 mm x 6.22 mm footprint and 3.20 mm height for high-power density mounting. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
DO-214AB (SMC) package with cathode indicated by molded band; two-terminal device with anode and cathode leads optimized for high-current surge handling and thermal dissipation via PCB copper pour.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction or clamping | Connected to protected circuit ground or low-side return path; must be routed with low-inductance trace for effective transient shunting. |
| Cathode | Current exit point during reverse-biased clamping | Connected to protected line (e.g., 12 V rail or sensor input); color band identifies this terminal for correct PCB orientation. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process ensures stable leakage (<5 μA at VWM) and long-term reliability under thermal cycling. |
| High-temperature capability | TJ = 185 °C operation supports placement near heat sources in engine compartments without performance degradation. |
| Peak pulse power | 3000 W (10/1000 μs) handles ISO 7637-2 Pulse 5a load-dump energy without failure or parameter shift. |
| Clamping ratio | VC/VBR ≈ 1.45 - low ratio minimizes overvoltage exposure to downstream components during surge events. |
| MSL Level 1 | Rated for 260 °C peak reflow profile - eliminates pre-baking requirement and simplifies SMT assembly in high-volume production. |
Applications
| Automotive Power Line Protection | Engine Control Unit (ECU) Input Protection |
|---|---|
|
Use Scenario: Suppresses load-dump transients (ISO 7637-2 Pulse 5a) on 12 V battery-fed power rails in vehicle infotainment and body control modules. IC Role / Device Role / Timing Role: Unidirectional TVS clamp that diverts surge current away from DC-DC converters and microcontrollers during alternator field collapse. Use Value: Limits rail voltage to ≤17.0 V during 3000 W pulses, preventing latch-up or permanent damage to 12 V-rated silicon. |
Use Scenario: Protects analog sensor inputs (e.g., MAP, TPS) and CAN transceiver power pins in engine management systems exposed to ignition noise and relay switching. IC Role / Device Role / Timing Role: Fast-response transient suppressor placed at ECU board edge to absorb sub-100 ns spikes before reaching signal conditioning circuitry. Use Value: Clamps within nanoseconds at 17.0 V, preserving ADC accuracy and avoiding false fault codes due to voltage overshoot. |
| Industrial Motor Drive I/O Protection | Telecom Power Supply Surge Suppression |
|
Use Scenario: Shields digital I/O lines and encoder feedback paths in variable-frequency drives subjected to inductive kickback from contactor switching. IC Role / Device Role / Timing Role: Standoff-rated TVS on 24 V control bus, activated only during >11.1 V transients to avoid loading normal operation. Use Value: Withstands repeated 200 A surge events (IFSM) and maintains <5 μA leakage at 10 V, ensuring signal integrity across decades of operation. |
Use Scenario: Guards AC/DC front-end and PoE interface circuits in base station power supplies against lightning-induced surges on primary and secondary sides. IC Role / Device Role / Timing Role: Secondary-side unidirectional clamp on 48 V telecom rail, coordinated with upstream MOVs to distribute energy absorption. Use Value: Delivers 3000 W pulse handling with RθJL = 18.3 °C/W, enabling compact layout without forced-air cooling in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10A | Same DO-214AC (SMA) package; lower PPPM = 400 W; VBR = 11.1–12.3 V; TJ max. = 150 °C | Limited to low-energy transients (e.g., ESD, data line); unsuitable for load-dump or motor drive spikes | Select when cost sensitivity outweighs surge energy requirements and ambient temperature stays below 125 °C. |
| SMCJ10A | Same DO-214AB (SMC) package; identical PPPM = 3000 W and VBR range; AEC-Q101 qualified; TJ max. = 175 °C | Marginally lower thermal limit reduces lifetime in sustained high-temp environments (e.g., under-hood) | Acceptable for non-critical automotive zones or industrial controls where 175 °C suffices and supply chain favors established SMCJ series. |
Compared with SMAJ10A and SMCJ10A, the 3KASMC10HE3_A/H offers superior high-temperature endurance (185 °C vs. 150/175 °C) and tighter process control for automotive AEC-Q101 compliance - critical for extended-life deployments in harsh thermal environments.
Availability
3KASMC10HE3_A/H is available at Aetrix Electronics and suitable for automotive electronics, industrial motor drives, and telecom power systems requiring stable component supply with AEC-Q101 validation, high-temperature resilience, and repeatable 3000 W surge performance.
Supply support for 3KASMC10HE3_A/H includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, and optoelectronics for automotive, industrial, and computing markets.
The 3KASMC series is engineered specifically for automotive-grade transient suppression - delivering AEC-Q101 qualification, 185 °C operation, and DO-214AB thermal performance to meet stringent ISO 7637-2 and ISO 16750-2 requirements.
FAQ
What is the clamping voltage of the 3KASMC10HE3_A/H at its rated peak pulse current?
The 3KASMC10HE3_A/H has a maximum clamping voltage (VC) of 17.0 V at its peak pulse current (IPPM) of 177 A, measured using a 10/1000 μs waveform. This value ensures downstream 12 V components remain within safe operating limits during high-energy transients. The 3KASMC10HE3_A/H achieves this with low incremental surge resistance and fast response, making it suitable for automotive power rail protection where voltage overshoot must be tightly constrained.
Is the 3KASMC10HE3_A/H qualified for automotive applications?
Yes, the 3KASMC10HE3_A/H is AEC-Q101 qualified and designed for automotive use, including under-hood environments. It supports junction temperatures up to +185 °C, passes MSL Level 1 reflow (260 °C peak), and meets ISO 7637-2 load-dump immunity requirements. The 3KASMC10HE3_A/H is commonly deployed in ECUs, ADAS sensors, and body control modules where reliability under thermal and electrical stress is mandatory.
What package type does the 3KASMC10HE3_A/H use, and what are its key mechanical features?
The 3KASMC10HE3_A/H uses the DO-214AB (SMC) surface-mount package, measuring 7.11 mm × 6.22 mm × 3.20 mm with matte tin-plated leads solderable per J-STD-002. Its molding compound meets UL 94 V-0 flammability rating, and the cathode is marked by a visible band. The 3KASMC10HE3_A/H's thermal resistance is RθJA = 77.5 °C/W (typical), enabling efficient heat transfer to PCB copper when mounted per recommended pad layout.
How does the 3KASMC10HE3_A/H differ from standard SMAJ or SMCJ series TVS diodes?
The 3KASMC10HE3_A/H differs from SMAJ and SMCJ series by offering higher junction temperature capability (185 °C vs. 150/175 °C), tighter VBR tolerance, and enhanced process control for AEC-Q101 compliance. Unlike SMAJ10A (400 W), the 3KASMC10HE3_A/H sustains 3000 W pulses. Its passivated anisotropic rectifier structure also improves long-term leakage stability. These attributes make the 3KASMC10HE3_A/H preferable for mission-critical automotive applications demanding extended thermal margin and proven reliability.
What is the maximum reverse leakage current of the 3KASMC10HE3_A/H at its stand-off voltage?
The 3KASMC10HE3_A/H exhibits a maximum reverse leakage current (IR) of 5.0 μA at its 10 V stand-off voltage (VWM) and 25 °C ambient temperature. At elevated temperature (TJ = 150 °C), leakage remains ≤50 μA - confirming stable performance across automotive operating ranges. This low leakage preserves system efficiency and avoids false triggering in high-impedance sensor interfaces, a key design advantage of the 3KASMC10HE3_A/H in precision analog circuits.
3KASMC10HE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 18.8V
- Current - Peak Pulse (10/1000µs):
- 160A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
3KASMC10HE3_A/H FAQ
1.How can I place an order for 3KASMC10HE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC10HE3_A/H on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 3KASMC10HE3_A/H reliable?
The price and inventory of 3KASMC10HE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3KASMC10HE3_A/H is usually 5 days.
3.What payment methods are accepted for 3KASMC10HE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC10HE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC10HE3_A/H?
3KASMC10HE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC10HE3_A/H order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 3KASMC10HE3_A/H?
For technical support, including 3KASMC10HE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC10HE3_A/H requirements.
6.How does Aetrix verify that 3KASMC10HE3_A/H is sourced from the original manufacturer or authorized distributors?
All 3KASMC10HE3_A/H products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 3KASMC10HE3_A/H meets industry standards.
7.What is the process for return or replacement of 3KASMC10HE3_A/H?
All 3KASMC10HE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC10HE3_A/H, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 3KASMC10HE3_A/H part is unused and in its original packaging.
Return procedure for 3KASMC10HE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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